There is an updated pull request by tornaria against master on the void-packages repository

https://github.com/tornaria/void-packages lrcalc
https://github.com/void-linux/void-packages/pull/34186

New package: lrcalc-2.1
Dependency of sagemath

A patch file from https://github.com/void-linux/void-packages/pull/34186.patch is attached